Learning task 2: Solve the following problems and write yoir answer in a sheet of paper
1. THE RADIUS OF A CIRCLE IS 9 CENTIMETERS. WHAT IS THE AREA?
2.THE DIAMETER OF A CIRCLE IS 12 INCHES. WHAT IS THE AREA?
3. THE RADIUS OF A CIRCULAR RUG IS 4 FEET. WHAT IS THE AREA?
4.IF A DIAMETER OF A CIRCULAR WALL CLOCK IS 30cm, what is the are of the clock?
5. FIND THE AREA OF A CIRCULAR POOL WHOSE RADIUS IS 2 METERS.
6. FATHER WILL FENCE A CIRCULAR GARDEN WHOSE RADIUS IS 3.5 M. HOW MANY METERS OF FENCING MATERIAL WILL HE USE?
1. THE RADIUS OF A CIRCLE IS 9 CENTIMETERS. WHAT IS THE AREA?
2.THE DIAMETER OF A CIRCLE IS 12 INCHES. WHAT IS THE AREA?
3. THE RADIUS OF A CIRCULAR RUG IS 4 FEET. WHAT IS THE AREA?
4.IF A DIAMETER OF A CIRCULAR WALL CLOCK IS 30cm, what is the are of the clock?
5. FIND THE AREA OF A CIRCULAR POOL WHOSE RADIUS IS 2 METERS.
6. FATHER WILL FENCE A CIRCULAR GARDEN WHOSE RADIUS IS 3.5 M. HOW MANY METERS OF FENCING MATERIAL WILL HE USE?
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Answer:
Area of the circle= πr^2 where r is radius.
Half of diameter is radius
1. r= 9 cm
A=πr^2
A= (3.14)(9cm)^2
A= (3.14)(81 cm^2)
A= 254.34 square centimeters
2. A= (3.14)(6 in)^2
A= (3.14)(36 in^2)
A= 113.04 in^2
3. A= (3.14)(4 ft.)^2
A= (3.14)(16 ft^2)
A= 50.24 ft^2
4. A= (3.14)(15 cm)^2
A= (3.14)(225 cm^2)
A= 706.5 cm^2
5. A= (3.14)(2 m)^2
A= (3.14)(4 m^2)
A= 12.56 m^2
6. C=2πr
C= 2(3.14)(3.5m)
C= 21.98 m